3U Energy Saving Lamp Product Description3u energy saving lamp 110-130V, 220-240V, 5W, 7W, 9W, 11W, 13W, 15W, ... 20W, 23W, 26W Tube diameter: 7mm, 9mm, 12mm Base type ... Extremely high illumination efficiency Compact & robust product design Energy saving lamp are RoHS compliance and CE approval